package collection02;

import java.util.ArrayList;
import java.util.Collection;

/**
 * @author Huangjin
 * @version 1.0
 * describe:
 * @date 2023/3/2 20:17
 */
public class CollectionOperDemo {
    public static void main(String[] args) {
        Collection c1 = new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add(".net");
        System.out.println("c1:"+c1);
        Collection c2 = new ArrayList();
        c2.add("android");
        c2.add("ios");
        c2.add("java");
        System.out.println("c2:"+c2);
        //将c2添加到c1中
        c1.addAll(c2);
        System.out.println("c1:"+c1);
        System.out.println("c2:"+c2);

        Collection c3 = new ArrayList();
        c3.add("c++");
        c3.add("android");
        c3.add("php");
        System.out.println("c3:"+c3);
        //判断c1中是否包含c3中的所有元素
        boolean contains = c1.containsAll(c3);
        System.out.println("是否包含："+contains);

        //取交集：c1中仅保留与c3中所共有的元素，而c3不变
//        c1.retainAll(c3);
//        System.out.println("c1:"+c1);
//        System.out.println("c3:"+c3);
        System.out.println(c1);
        c1.removeAll(c3);
        System.out.println("c1:"+c1);
        System.out.println("c3:"+c3);
    }
}
